268 THE ENTOMOLOGIST. 



form a rather open network around the micropyle. The rosette 

 consists of usually, I believe, nine, but sometimes ten or even 

 eleven, cells. These are of an elongate pear-shape, and are 

 arranged in the usual way, with their more pointed apices 

 meeting together in the centre. These cells are not all of the 

 same size, but the whole rosette is usually about 0*07 mm. in 

 diameter. The rather small base of the egg is flattened and 

 smooth. 



From the fair state of the empty egg-shells it may be pre- 

 sumed that the larva does not eat the shell after leaving the egg. 



DESCRIPTION OF A NEW SPECIES OP ODYNERUS 

 (VESPID^) PROM VANCOUVER'S ISLAND. 



(^ By p. Cameron. 



Odynerus mathewi, sp. nov. 



Black, with the following pale yellow : the clypeus, mandibles 

 except the teeth, labrum, a mark more than twice longer than wide 

 and rounded above on the front, a broad line on tlie lower edge of the 

 eye incision, a short narrow line on the upper part of the outer orbits, 

 a line of almost equal width on the sides of the base of pronotum, 

 tegulfe, a conical mark below them, a line on the base of post- 

 scutellum, the spine on the lower part of metapleurte, lines on tlie 

 apices of the abdominal segments (tliat on first on top only), a small 

 spot on the sides of first segment near tbe middle, and a large trans- 

 verse one — its outer side rounded, widened, the inner smaller and 

 transverse — pale yellow. Antennal scape pale yellow below, the 

 fiagellum yellow, tinged with fulvous, its hook broad, thick, not much 

 narrowed towards the apex, reaching to the base of the penultimate 

 segment. Wings hyaline, tinged with fuscous violaceous, the stigma 

 and nervures black. ^ . Length, 8 mm. 



Vancouver's Island (G. P. Mathew, R.N.). 



Clypeus longer than wide, its apex transverse, somewhat broad. 

 Base of thorax transverse, the sides hardly projecting. Apex of post- 

 scutellum broadly rounded. Sides of metanotum broad, rounded, 

 rugosely punctured, not margined. Second abdominal segment if 

 anything wider than long, the apex more strongly punctured than the 

 rest, not refiexed, fiat ; the yellow band on it is wider than on the 

 others ; below it is roundly incised on either side of the middle. Legs 

 pale yellow, the cox^e behind, the fore femora to beyond tbe middle 

 above, the middle behind and below, the hinder entirely, and the tro- 

 chanters, black. 



Belongs to Saussure's Section B., Syn. Amer. Wasps, 290. 



